类并

According to the engineering practice, the problems of adaptive control theory were analyzed and the results with simulation were proved. Also an alterative way, model free control method, was introduced to resolve the above problem.

依据工程实践的结果，分析了某些自适应控制理论存在这类问题的原因，并通过仿真证实了分析的结论，并提出了应用无模型控制方法是打破这一困境的可能途径。

To better understand the roles of LsrA protein in nodulation, a series of analyses of nodules using scanning electron microscopy, genetic and biochemical approaches have been carried out. Our analyses suggest that the lsrA1 nodules contain bacteroids in the invasion and establishing zone only. The lsrA gene expression is active early in the invasion zone and activated later than bacA genes. The lost of LsrA protein dramatically reduced the expression of nifA and fixK, and completely blocked the expression of the nifH gene for nitrogenase. LsrA protein functions early in the bacteroid development and it is essential for the development nitrogen fixing bacteroids.

前期的工作中，苜蓿中华根瘤菌Rm1021中90个候选LysR基因已经被定向插入突变，并筛选在自生生长时期、共生生长时期的表型，以期寻找更多在自生状态或共生固氮中有功能的LysR转录因子。1 针对前期鉴定出的共生固氮必需的lsrA基因，我们应用了一系列扫描电子显微镜技术、生物化学、分子遗传学等方法，发现lsrA基因主要在根瘤侵染区开始表达，表达时序也在侵染阶段左右，但晚于bacA基因表达；LsrA蛋白缺失后根瘤固氮区中缺乏具有固氮能力的类菌体，nifA和fixK基因的转录水平降低，nifH基因的转录被完全阻断，因此LsrA蛋白为根瘤发育所必需，是新的根瘤发育信号传导途径成员。2 通过表型筛选我们鉴定了苜蓿中华根瘤菌的oxyR基因，并研究了它的调节特性。oxyR突变后，苜蓿中华根瘤菌对过氧化氢敏感性提高，适应性降低。

In recent years,the increase of single nation are attracting people's notice.Some of them aspired after undertaking,so that they are no marriage on the agenda.Some people may be so engrossed in work, entertainment, travel and make friends,anyhow,the reason of keeping single is not the same.More than 80% of them did not abandon the traditional marriage values,and expressed hope to marriage or one day be married.

近年来这类单身族的人数增长引人注目，他们中有些人或许是为了追求事业而未把婚姻引入自己的议事日程中，有些人或许是沉溺在工作、娱乐、旅游、健身或交友等活动中，总之他们保持单身的原因不尽相同，它们中80%以上的人并没有摒弃传统的婚姻价值观，并表示希望结婚或将来要结婚。

Characteristics of raw materials as a result of drug manufacturers to provide raw materials for drugs does not belong to the bulk of raw materials for drugs, so there did not enjoy the current round of big bull market of raw materials, but in appreciation of the RMB and the export tax rebate cut the process to bear the a certain degree of loss, but such enterprises in the raw material drug production enterprises in the highest degree of internationalization, and finished drug is also more closely linked, are most likely to transition to the finished drug business, and its development prospects in the raw materials the most promising enterprises.

原料特色的药物制造商的结果，为药物不属于毒品的原料大宗原材料，所以并没有享受到原材料大牛市本轮，但在人民币升值和出口退税降低的过程承担一定程度的损失，但在国际化程度最高的原料药生产企业，这类企业的成品药也更紧密联系的，最有可能过渡到成品药业务，并在最有前途的企业，原材料的发展前景。

Because they have one nitrogen atom with lone pair electrons, benzimidazole compounds are endowed with capability of complex and molecular recognition and they can analogue biological molecule.

苯并咪唑具有一个含孤对电子的氮原子，从而使苯并咪唑类化合物具有很强的配位能力及分子识别能力，可以用于生物分子的模拟。

Moreover for derivatives of benzimidazole, density functional theory method calculations of the structure, atomic charge distributions and electronicspectra have been performed at B3LYP/6-311G*~* level. The results of the calculationshave been compared with experimental data and they are found to support each other,which provide useful information for the further study on derivatives ofbenzimidazole.

并运用密度泛函理论在B3LYP／6-311G~**料水平上，对化合物的优化几何、原子电荷分布及转移、电子光谱以及及在不同温度下的热力学性质进行了计算，从而为苯并咪唑类化合物的进一步研究提供了有价值的参考和理论数据。

The new methods to synthesize 6-hydroxy-3, 8-dioxabicyclo[3.2.1]octane, dihydrobenzofuran and benzofuran derivatives are described in this thesis.

本文主要论述了(5R)-6-羟基-3，8-二氧二环[3.2.1]辛烷，苯并二氢呋喃和苯并呋喃类衍生物的合成新方法。

The trifluoromethyl modified benzofuran compounds synthesized by the invention contain a plurality of functional groups in benzene ring portion, and can be used as precursor for subsequent synthesis of benzofuran medicine intermediate containing trifluoromethyl.

本发明合成的三氟甲基修饰的苯并呋喃类化合物，苯环部分包括多种官能团，可以作为后续合成含三氟甲基苯并呋喃药物中间体的前体。

Six novel dihydrobenzofuran and benzofuran neolignans compounds(1～6) were synthesized by knoevenagel reactiton,esterfication, biomimetic oxidative coupling ,DDQ dehydrogenation,reduction and hydrolysis with 4-hydroxybenzaldehyde and malonic acid as starting material.

以对羟基苯甲醛和丙二酸为原料，经Knoevenagel缩合反应，酯化、仿生氧化偶联、DDQ脱氢、还原和水解等反应步骤，合成了6种未见文献报道的苯并二氢呋喃新木脂素和苯并呋喃新木脂素类化合物(1~6)。

They were members of MADS box gene family, and which highly homologous to AGAMOUS from Arabidopsis and other known orthologues.

参照单子叶植物的AG类基因序列设计简并引物，利用RT-PCR的方法，从百合中扩增AG到同源片段，并根据扩增出的片段序列设计特异引物进行5'RACE和3'RACE的扩增，最终获得全长。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。